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Connections
DOP output
26 pin high density D type plug
Function
Output type
Power
Incremental signals
RS422A digital
Cosine
Analogue
Sine
Reference mark
RS422A digital
Analogue
Alarm
RS422A digital
Limits
Open collector
Readhead set-up
–
Shield
–
–
Electrical connections
Signal
Pin
5 V Power
26
5 V Sense
18
IMPORTANT: The outer shield should be connected to the machine earth (Field Ground). The inner shield should be connected
0 V Power
9
to 0 V at receiving electronics only. Care should be taken to ensure that the inner and outer shields are insulated from each
other. If the inner and outer shields are connected together, this will cause a short between 0 V and earth, which could cause
0 V Sense
8
electrical noise issues.
A+
24
A-
6
NOTE: The external earthing tag on the interface should be used when mounting the interface on a DIN rail.
B+
7
NOTE: Maximum cable length between readhead and interface is 10 m.
B-
16
V
+
1
1
V
-
19
1
V
+
2
2
Recommended signal termination
V
-
11
2
Digital outputs
Z+
15
Z-
23
V
+
12
Interface
0
V
-
20
A B Z E+
0
E+
25
E-
17
P
4
Q
13
X
10
A B Z E-
Inner shield
Not connected
Outer shield
Case
DOP system grounding and shielding
Readhead
Interface
Inner shield
Outer shield
Customer
electronics
Cable Z
= 120R
120R
0
Standard RS422A line receiver circuitry
Extension cable
Customer
max. 50m dependent
electronics
on output frequency
5 V
Output
signals
0 V
Limit outputs
Analogue outputs
5 to 24 V
V
V
V
0
1
R*
P Q
V
V
V
0
1
*
Select R so max. current does not
exceed 20 mA
Alternatively, use a suitable relay
or opto-isolator
+
2
120R
-
2
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